Line Sizing Calculator
Calculate pressure drop, fluid velocity, and friction losses for pipeline networks.
Process Design Inputs
Compressible Gas Properties
Piping Geometry
Minor Losses (Fittings)
| Fitting Type | Qty | K-Factor | |
|---|---|---|---|
| Sum K: | 0.00 | ||
Analyzing Hydraulics...
Results Dashboard
Awaiting DataEngineering Insights
System standing by for inputs...
About this Tool
Welcome to the Smart Pipe Flow Analyzer. This tool functions as a professional-grade hydraulic simulator, bridging the gap between fundamental fluid mechanics and AI-assisted process design for both incompressible (liquids) and compressible (gases) flows.
⚙️ How It Works
The core engine calculates the total pressure drop across a piping system by solving the rigorous Darcy-Weisbach equation. Rather than forcing you to iterate manually, the tool dynamically calculates the Reynolds number, relative roughness, and complex friction factors. Furthermore, the integrated Expert System acts as a virtual piping engineer, immediately flagging issues like erosive velocities, severe pressure losses, or non-turbulent flow regimes.
1. Input Variables Explained
To run a complete hydraulic analysis, define the fluid state and mechanical pipe routing:
- Fluid Properties & Phase: Toggle between Liquid and Gas modes. Gas mode unlocks critical compressible properties like Inlet Pressure, Specific Heat Ratio (γ), and Compressibility (Z) to adjust for density changes along the pipe.
- Piping Geometry: Quickly autofill the true inner diameter by selecting standard NPS pipe sizes and schedules, or enter custom dimensions. Define the pipe length and absolute roughness (ε) based on the pipe's material (e.g., commercial steel).
- Minor Losses (Fittings): An interactive table allows you to add elbows, tees, and valves to the line. The engine automatically aggregates their resistance coefficients (ΣK) into the total pressure drop.
- Friction Method: Choose the mathematical correlation used to solve the Moody chart. Options range from the explicit Swamee-Jain and Haaland equations to the rigorous, iterative Colebrook-White standard.
2. Core Diagnostic Engines (Advanced)
The analyzer processes your routing through three distinct computational layers:
Hydraulic Solver
Calculates the exact fluid velocity and flow regime. It accurately models wall friction and turbulence to establish the precise head loss generated by the pipe and its fittings.
Gas Expansion Logic
For gas lines, the tool adjusts for pressure drop limitations, ensuring that the calculated pressure drop doesn't violate fundamental compressible flow limitations or approach choked (sonic) conditions unexpectedly.
Expert Heuristics
Automatically compares calculated velocities and pressure drops against standard industry guidelines (e.g., API RP 14E). It warns against erosion risks and excessive pumping power requirements.
3. Results & Output Variables Explained
The generated results are organized into an interactive dashboard for rapid engineering evaluation:
- Velocity (m/s): The bulk speed of the fluid. Must be maintained within a safe "Goldilocks" zone—fast enough to sweep debris, but slow enough to prevent pipe erosion and noise.
- Reynolds Number (Re): A dimensionless metric defining the flow profile. Re < 2300 indicates smooth Laminar flow; Re > 4000 indicates fully mixed Turbulent flow, which is standard for most industrial processing.
- Friction Factor (f): The Darcy friction factor, heavily dependent on the pipe wall's internal roughness and the turbulence (Reynolds number) of the flow.
- Total ΔP (bar): The absolute pressure lost across the defined length of pipe and all associated fittings. This directly dictates the required sizing for upstream pumps or compressors.
- Safety Warnings: Critical red-flag alerts notifying the engineer of severely undersized pipes, extreme pressure drops, or damaging velocities.
- Optimization Recommendations: Constructive guidance generated by the expert system. If the pipe is oversized and wasting capital expenditure, or undersized and wasting utility power, the AI will suggest the optimal direction for resizing.